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(parent: 13f5bf1) | patch
net: relax rtnl_dereference()
authorDavid S. Miller <davem@davemloft.net>
Tue, 5 Oct 2010 07:29:48 +0000 (00:29 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 5 Oct 2010 07:29:48 +0000 (00:29 -0700)
commit29fa060eab3f524d338566d34c1d9e704579ae5e
tree5ec18e56dc3321dda6e1fa76b08b32043f8c88e9tree | snapshot (tar.gz zip)
parent13f5bf18ba657d2d17c8fcf584e50359c718dd4bcommit | diff
net: relax rtnl_dereference()

rtnl_dereference() is used in contexts where RTNL is held, to fetch an
RCU protected pointer.

Updates to this pointer are prevented by RTNL, so we dont need
smp_read_barrier_depends() and the ACCESS_ONCE() provided in
rcu_dereference_check().

rtnl_dereference() is mainly a macro to document the locking invariant.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/rtnetlink.h diff | blob | blame | history